CN112283324B - Symmetrically-distributed split-flow type two-stage gear phase difference assembly method - Google Patents
Symmetrically-distributed split-flow type two-stage gear phase difference assembly method Download PDFInfo
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- CN112283324B CN112283324B CN202011276268.XA CN202011276268A CN112283324B CN 112283324 B CN112283324 B CN 112283324B CN 202011276268 A CN202011276268 A CN 202011276268A CN 112283324 B CN112283324 B CN 112283324B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
Abstract
The invention discloses a symmetrically distributed split-flow type two-stage gear phase difference assembly method, which comprises the following steps of: an input small gear, a primary large gear, a secondary small gear, a simulation gear and a torsion shaft are sequentially installed; and taking out the simulation gear and installing an output large gear. The invention has the advantage of high assembly qualification rate.
Description
Technical Field
The invention relates to the field of assembling and debugging of two-stage gear transmission devices with meshing phase relation, in particular to a symmetrically-distributed split-flow type two-stage gear phase difference assembling method.
Background
The symmetrically distributed split-flow two-stage gear transmission consists of a first-stage sun gear, a first-stage star gear, a second-stage star gear (the star gear generally consists of three cylindrical gears) and a second-stage sun gear, wherein the star gear and the sun gear have two transmission modes of internal meshing and external meshing as shown in figure 1. The split-flow type structure is a gear transmission with the input power split by a first-stage star wheel and fixed gear axes, and a second-stage star wheel converges the power and outputs the power by a sun wheel. Compared with a non-split structure, the transmission structure is compact, has the advantages of large transmission ratio, coaxial input and output, small volume and weight and the like, and because all gears are of a fixed-shaft structure, the strength, the rigidity and the working reliability of a transmission system are improved, and the vibration and the noise of the system are reduced.
As shown in fig. 2, the transmission structure of two-stage gears is such that the input and output are coaxially arranged, the power is transmitted to the input pinion 1 (first-stage pinion) in a power three-branch manner, the input pinion 1 transmits the power to the three first-stage bull gears 2 through gear engagement to form a power three-branch, the three first-stage bull gears 2 transmit the power to the three second-stage pinion gears 4 through the torsion shaft 3, and then the three second-stage pinion gears 4 drive the output bull gear 5 at the same time to output the power. The planet wheel connection is characterized in that three first-stage large gears 2 are connected with a torsion shaft 3 through splines, three second-stage small gears 4 are connected with the torsion shaft 3 through splines, and the first-stage large gears 2 and the second-stage small gears 4 are connected into a whole through the torsion shaft 3.
When the three-shunt type two-stage gear is assembled, the transmission ratio condition, the concentricity condition and the adjacent condition are met, the assembly condition is also met, and all stages of gears at different positions have different assembly and adjustment requirements. When assembling the gear, because of the reason of the gear phase (three groups of holes are isosceles triangles) and the difference of the number of teeth of the splines at the two ends of the torsion shaft 3, the relative positions of the first-stage big gear 2, the first-stage small gear 1, the second-stage small gear 4 and the output big gear 5 must be correct at the same time to ensure that the torsion shaft 3 penetrates through the first-stage big gear 2 and the second-stage small gear 4, and the power output from the first stage to the second stage is realized through the torsion shaft 3.
In the actual assembly process, the wheel train installation process is complex, the installation positions of the gears are difficult to accurately guarantee, the assembly period is long, the efficiency is low, meanwhile, when the gears are not assembled in place, the gears interfere with each other, the gears cannot flexibly run, assembly errors often occur, the gears need to be continuously and repeatedly assembled and disassembled, and the accuracy and the efficiency of the assembly process are difficult to guarantee.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a symmetrically-distributed split-flow type two-stage gear phase difference assembly method with high assembly qualified rate.
In order to solve the technical problems, the invention adopts the following technical scheme:
a symmetrically distributed split-flow type two-stage gear phase difference assembly method comprises the following steps:
the method comprises the following steps: an input small gear, a primary large gear, a secondary small gear, a simulation gear and a torsion shaft are sequentially installed; taking out the simulation gear and installing an output large gear; or
Step two: sequentially mounting an input small gear, a primary large gear, a secondary small gear, a torsion shaft centering on the secondary small gear, a simulation gear and torsion shafts of the secondary small gears at two sides; and taking out the simulation gear and installing an output large gear.
As a further improvement to the above technical solution:
in the first step or the second step, the step of mounting the input pinion specifically comprises the following steps:
determining the specific positions of three tooth grooves which are meshed with the first-stage gearwheel on the input pinion according to a preset requirement, marking the three tooth grooves as a first tooth groove, a second tooth groove and a third tooth groove, installing the input pinion, wherein the first tooth groove is positioned right above the input pinion, the second tooth groove and the third tooth groove are symmetrically distributed on two sides of the first tooth groove, taking any one of the two end part splines on the torsion shaft, which is superposed on the projection position vertical to the plane of the torsion shaft, as a first tooth, and the scribed line of the first tooth groove is aligned with the scribed line of the first tooth of the torsion shaft;
in the first step or the second step, the step of installing the first-stage gearwheel specifically comprises the following steps
And determining the specific position of the marking gear teeth meshed with the input pinion on the first-stage bull gear according to the preset requirement, marking as fourth gear teeth, and installing three first-stage bull gears, wherein fourth gear groove lines of the three first-stage bull gears are respectively aligned with the gear groove lines of the first gear groove, the second gear groove and the third gear groove of the input pinion.
The gear teeth which are overlapped with the scribed lines of the first gear teeth of the torsion shaft on the first-stage large gear are marked tooth grooves.
In the first step or the second step, the mounting of the secondary pinion specifically comprises the following steps:
determining the specific position of a fifth tooth space meshed with the output gearwheel on the secondary pinion according to the preset requirement, mounting the secondary pinion, and aligning a scribed line of the fifth tooth space of the centered secondary pinion with a fourth tooth scribed line of the primary gearwheel during assembly;
in the first step or the second step, the step of installing the simulation gear specifically comprises the following steps:
and the simulation gear is arranged for simulating and outputting the large gear, three groups of simulation teeth are arranged on the simulation gear and are respectively meshed with the second-stage small gears, one group of simulation teeth right above the simulation gear is meshed with the fifth tooth space of the second-stage small gears in the middle, the second-stage small gears on two sides are rotated to enable the fifth tooth spaces of the second-stage small gears on two sides to be respectively meshed with the other two groups of simulation teeth of the simulation gear, and the positions of the second-stage small gears are fixed.
And the gear teeth on the secondary pinion, which are superposed with the gear tooth reticle of the first gear teeth of the torsion shaft, are a fifth tooth groove.
In the first step, the installation of the torsion shaft specifically includes: the torsion shaft in the middle is installed firstly, and then the torsion shafts on the two sides are installed.
The module and the pressure angle of the simulation gear and the output gearwheel are the same.
Each group of simulated teeth of the simulated gear at least comprises two teeth.
Compared with the prior art, the invention has the advantages that:
the assembling method can reduce the influence of wrong assembly and repeated assembly and disassembly on the assembling period and the qualification rate. The simulation gear has the advantages of being capable of changing the die quickly, free of damage to parts, simple, convenient and the like, and when the two-stage gear is assembled with the torsion shaft, the assembly process is clear, an operator can be effectively guided to assemble, and the assembly qualified rate is high.
Drawings
Fig. 1 is a schematic diagram of a transmission of a symmetrically distributed split type two-stage gear.
Fig. 2 is a transmission structure diagram of a symmetrically distributed split type two-stage gear.
Fig. 3 is a schematic view of the combination relationship between the input pinion and the primary gearwheel.
FIG. 4 is a schematic view of a simulated gear and two-stage pinion combination.
Fig. 5 is a schematic view of the combination relationship of the output gear wheel and the two-stage pinion.
Fig. 6 is a schematic view of a structure of a simulated gear.
Fig. 7 is an assembly flow diagram of the present invention.
The reference numerals in the figures denote:
1. an input pinion gear; 2. a first-stage bull gear; 3. a torsion shaft; 4. a secondary pinion gear; 5. an output gearwheel; 6. simulating a gear;
Detailed Description
The invention will be described in further detail below with reference to the drawings and specific examples. Unless otherwise specified, the instruments or materials employed in the present invention are commercially available.
Example 1:
as shown in fig. 3 to 7, the symmetrically distributed split type two-stage gear phase difference assembling method of the present embodiment includes the following steps: an input pinion 1, a primary gearwheel 2, a secondary pinion 4, a simulation gear 6 and a torsion shaft 3 are sequentially arranged; the analog gear 6 is taken out and the output big gear 5 is installed.
The symmetrically-distributed split-flow type two-stage gear phase difference assembling method of the embodiment specifically comprises the following steps:
s1, mounting input pinion 1: the specific positions of three tooth grooves meshed with the primary gearwheel 2 on the input pinion 1 are determined according to preset requirements and are marked as a first tooth groove, a second tooth groove and a third tooth groove, the input pinion 1 is installed, the first tooth groove is positioned right above the input pinion 1, the second tooth groove and the third tooth groove are symmetrically distributed on two sides of the first tooth groove, a first tooth processed by the torsion shaft 3 is used as a first tooth, splines at two end parts of the first tooth are superposed, (the first tooth is a first manufactured tooth during manufacturing of the splines in the embodiment), and scribed lines of the first tooth groove are aligned with scribed lines of the first tooth of the torsion shaft 3.
In the present embodiment, the number of teeth of the input pinion 1 is 35, the clockwise direction from the first tooth space to the 12 th tooth space of the input pinion 1 is the third tooth space, and the counterclockwise direction from the first tooth space to the 12 th tooth space of the input pinion 1 is the second tooth space. In this embodiment, because the input end gear and the output end gear have a phase difference, the number of splines used for transmitting torque at both ends of the torsion shaft 3 respectively matched with the input end gear and the output end gear is different, and any one of the teeth with the projections of the splines at both ends coinciding on a plane perpendicular to the torsion shaft 3 is a first tooth.
S2, mounting a primary gearwheel 2: and determining the specific position of the marking gear teeth meshed with the input pinion 1 on the first-stage bull gear 2 according to the preset requirement, marking as fourth gear teeth, installing three first-stage bull gears 2, wherein fourth gear groove lines of the three first-stage bull gears 2 are respectively aligned with the gear groove lines of the first gear groove, the second gear groove and the third gear groove of the input pinion 1.
S2-1, firstly assembling a primary bull gear 2 right above an input pinion 1: adjusting the position of the first-stage large gear 2 to enable a fourth gear groove of the first-stage large gear 2 and a groove line of a first tooth groove of the input small gear 1 to be correspondingly arranged on a line, and installing the first-stage large gear 2;
s2-2, assembling the first-stage bull gear 2 on the right side of the input pinion 1: aligning a fourth wheel tooth groove line of the right first-stage bull gear 2 with a tooth groove line of a second tooth groove of the input pinion 1, and then loading the second first-stage bull gear 2;
s2-3, finally assembling the primary gearwheel 2 on the left side of the input pinion 1: after aligning a fourth gear groove line of the left first-stage bull gear 2 with a gear groove line of a third gear groove of the input pinion 1, the third first-stage bull gear 2 is installed, and in the assembling process, the relative positions of the gears are kept unchanged.
In this embodiment, the gear teeth on the primary gearwheel 2, which coincide with the scribed lines of the first gear teeth of the torsion shaft 3, are marked tooth slots.
S3, mounting the secondary pinion 4: the specific position of a fifth tooth space on the secondary pinion 4 meshed with the output gearwheel 5 is determined according to the preset requirements, the secondary pinion 4 is installed, and the scribed line of the fifth tooth space of the secondary pinion 4 which is centered during assembly is aligned with the scribed line of the fourth tooth space of the primary gearwheel 2.
In this embodiment, the gear teeth of the secondary pinion 4 that coincide with the first gear teeth scribe line of the torsion shaft 3 are the fifth tooth grooves.
S4, mounting the simulation gear 6: the simulation gear 6 is arranged for simulating the output large gear 5, three groups of simulation teeth are arranged on the simulation gear 6 and are respectively meshed with the secondary small gears 4, one group of simulation teeth right above the simulation gear 6 are meshed with the fifth tooth grooves of the middle secondary small gears 4, the secondary small gears 4 on two sides are rotated to enable the fifth tooth grooves of the secondary small gears 4 on two sides to be respectively meshed with the other two groups of simulation teeth of the simulation gear 6, and the positions of the secondary small gears 4 are fixed.
In the prior art, generally, the object assembly is directly adopted, but in the object assembly, the problem of poor sight exists due to the existence of the end cover, so that the difficulty is high in the assembly process, and the assembly is easy to make mistakes. In the invention, in order to ensure the correct assembly position and avoid reworking, the simulation tool of the output gearwheel 5, namely the simulation gear 6 is manufactured, the assembly position of the output gearwheel 5 is predetermined by simulation assembly, the simulation tool is simple and easy to operate, the assembly and debugging difficulty is reduced, the correct assembly is ensured, and the simulation tool can be popularized and used.
In this embodiment, the simulation gear 6 is made of a weight reduction design and made of aluminum, and the number of teeth is only 6 (the number of teeth is 63 on the circumference), and the rest positions are hollowed (the number of redundant teeth on the outer circumference of the simulation gear 6 in fig. 4 is the number of teeth for indicating other hollows, and does not exist in practice), so that the weight is reduced. The module and the pressure angle of the simulation gear 6 and the output gearwheel 5 are the same, so that correct meshing at three positions is ensured, and each group of simulation teeth of the simulation gear 6 at least comprises two teeth. The simulation gear 6 is installed in front of the output large gear 5 for simulation assembly, the position is adjusted, and the teeth of the fifth tooth space of the second-stage small gear 4 are all adjusted to fall into the 20 th groove of the simulation gear 6 (if the simulation gear 6 is not hollowed, the tooth space between two simulation teeth on the side part is the 20 th groove of the simulation gear 6 in the counterclockwise direction or the clockwise direction from the tooth space right above).
S5, mounting the torsion beam 3: the torsion shaft 3 in the middle is installed first, and then the torsion shafts 3 on both sides are installed.
When the torsion shaft 3 in the upper middle is installed, the positions of the two gear mark lines (the fifth groove scale line of the secondary pinion 4 and the scale line of the first gear tooth of the torsion shaft 3) are aligned to be installed, in the embodiment, the first gear tooth scale line of the left torsion shaft 3 spline corresponds to the seventh spline groove of the second pinion 4 in the anticlockwise direction; the spline first gear tooth scribing line of the right torsion shaft 3 corresponds to a seventh tooth groove of the second-stage pinion 4 from the clockwise direction.
And S6, taking out the simulation gear 6 and mounting the output large gear 5.
Example 2:
the symmetrically-distributed split-flow type two-stage gear phase difference assembling method comprises the following steps of: sequentially mounting an input pinion 1, a primary gearwheel 2, a secondary pinion 4, a torsion shaft 3 of the secondary pinion 4 in the middle, a simulation gear 6 and torsion shafts 3 of the secondary pinions 4 at two sides; the analog gear 6 is taken out and the output big gear 5 is installed.
The general steps of this example are the same as example 1, except that: centering the installation sequence of the torsion shaft 3. The same or similar technical effects can be achieved by installing the centering torsion shaft 3 after the simulated gear 6 is installed in the embodiment 1, and installing the centering torsion shaft 3 before the simulated gear 6 is installed in the embodiment.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (9)
1. A symmetrically distributed split-flow type two-stage gear phase difference assembly method is characterized in that: the method comprises the following steps:
the method comprises the following steps: an input pinion (1), a primary gearwheel (2), a secondary pinion (4), a simulation gear (6) and a torsion shaft (3) are sequentially installed in sequence; taking out the simulation gear (6) and installing the output large gear (5); or
Step two: the torsion shaft (3) of the input small gear (1), the first-stage large gear (2), the second-stage small gear (4), the middle second-stage small gear (4), the simulation gear (6) and the torsion shaft (3) of the second-stage small gears (4) on two sides are sequentially installed; taking out the simulation gear (6) and installing the output large gear (5); in the first step or the second step, the step of mounting the input pinion (1) specifically comprises the following steps:
the specific positions of three tooth grooves meshed with the primary gearwheel (2) on the input pinion (1) are determined according to preset requirements and are marked as a first tooth groove, a second tooth groove and a third tooth groove, the input pinion (1) is installed, the first tooth groove is positioned right above the input pinion (1), the second tooth groove and the third tooth groove are symmetrically distributed on two sides of the first tooth groove, any one of the two end part splines on the torsion shaft (3) which are superposed in a projection position perpendicular to the plane of the torsion shaft (3) is taken as a first tooth, and a scribed line of the first tooth groove is aligned with a scribed line of the first tooth of the torsion shaft (3).
2. The symmetrically distributed split two-stage gear phase difference assembly method of claim 1, wherein: in the first step or the second step, the step of installing the primary gearwheel (2) specifically comprises the following steps:
and determining the specific position of a marking gear tooth meshed with the input pinion (1) on the first-stage large gear (2) according to the preset requirement, marking as a fourth gear tooth, installing three first-stage large gears (2), and aligning fourth gear tooth scale lines of the three first-stage large gears (2) with gear tooth scale lines of a first gear tooth groove, a second gear tooth groove and a third gear tooth groove of the input pinion (1) respectively.
3. The symmetrically distributed split two-stage gear phase difference assembly method of claim 2, wherein: the gear teeth which are overlapped with the scribed lines of the first gear teeth of the torsion shaft (3) on the first-stage bull gear (2) are marked tooth grooves.
4. The symmetrically distributed split two-stage gear phase difference assembly method of claim 2, wherein: in the first step or the second step, the mounting of the secondary pinion (4) specifically comprises the following steps:
the specific position of a fifth tooth space meshed with the output large gear (5) on the secondary small gear (4) is determined according to the preset requirement, the secondary small gear (4) is installed, and the scribed line of the fifth tooth space of the centered secondary small gear (4) is aligned with the fourth tooth scribed line of the primary large gear (2) during assembly.
5. The symmetrically distributed split two-stage gear phase difference assembly method of claim 2, wherein: in the first step or the second step, the step of installing the simulation gear (6) specifically comprises the following steps:
the simulation gear (6) is arranged and used for simulating and outputting the large gear (5), three groups of simulation teeth are arranged on the simulation gear (6) and are respectively meshed with the second-stage small gears (4), one group of simulation teeth right above the simulation gear (6) are meshed with a fifth tooth space of the second-stage small gear (4) in the middle, the second-stage small gears (4) on two sides are rotated to enable the fifth tooth spaces of the second-stage small gears (4) on two sides to be respectively meshed with the other two groups of simulation teeth of the simulation gear (6), and the positions of the second-stage small gears (4) are fixed.
6. The symmetrically distributed split two-stage gear phase difference assembly method of claim 4, wherein: and the gear teeth on the secondary pinion (4) which are superposed with the gear tooth scribing lines of the first gear teeth of the torsion shaft (3) are fifth tooth grooves.
7. The symmetrically distributed split two-stage gear phase difference assembly method of claim 4, wherein: in the first step, the installation of the torsion shaft (3) specifically comprises: firstly, a central torsion shaft (3) is installed, and then the torsion shafts (3) on two sides are installed.
8. The symmetrically distributed split type two-stage gear phase difference assembling method according to any one of claims 1 to 7, wherein: the module and the pressure angle of the simulation gear (6) and the output gearwheel (5) are the same.
9. The symmetrically distributed split type two-stage gear phase difference assembling method according to any one of claims 1 to 7, wherein: each group of simulated teeth of the simulated gear (6) at least comprises two teeth.
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| CN202011276268.XA CN112283324B (en) | 2020-11-14 | 2020-11-14 | Symmetrically-distributed split-flow type two-stage gear phase difference assembly method |
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| CN112283324B true CN112283324B (en) | 2022-02-18 |
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| CN2480621Y (en) * | 2000-05-16 | 2002-03-06 | 李华敏 | Wholly balancing, uniform loading and vibration-damping two-stage three-circulation speed reducer |
| JP4081662B2 (en) * | 2001-12-14 | 2008-04-30 | 富士ゼロックス株式会社 | Driving device and image forming apparatus using the same |
| JP5067192B2 (en) * | 2008-02-25 | 2012-11-07 | 株式会社ジェイテクト | Vehicle differential |
| CN103775566B (en) * | 2012-10-26 | 2018-08-21 | 德昌电机(深圳)有限公司 | Gear drive and its assembly method |
| CN102996755A (en) * | 2012-12-31 | 2013-03-27 | 中钢集团衡阳重机有限公司 | Transmission shaft |
| CN203374735U (en) * | 2013-06-28 | 2014-01-01 | 无锡麻德克斯精机有限公司 | Planetary gear reducer |
| PL231252B1 (en) * | 2014-06-27 | 2019-02-28 | Bydon Slawomir | Mechanical gear with two gears combined with each other, the axes of which rotate together in eccentric motion inside the two gears with internal teeth permanently meshed with them |
| CN106441875B (en) * | 2016-11-03 | 2018-10-23 | 中国船舶重工集团公司第七0三研究所 | Dual input branched power gear assembly blocking test system assembly method |
| CN207585470U (en) * | 2017-12-05 | 2018-07-06 | 重庆大合汽车配件有限公司 | Internal spline is to tooth detection device |
| CN109099114B (en) * | 2018-10-26 | 2020-08-25 | 中国航发湖南动力机械研究所 | Uniform load transmission mechanism and helicopter speed reducer |
| JP2020085061A (en) * | 2018-11-20 | 2020-06-04 | いすゞ自動車株式会社 | Case structure of power transmission device |
| CN210335036U (en) * | 2019-06-26 | 2020-04-17 | 天津天海同步科技有限公司 | Duplex helical gear tooth aligning device |
| CN212055761U (en) * | 2019-09-29 | 2020-12-01 | 西马克工程(中国)有限公司 | Heavy multistage vertical shaft eccentric sleeve type gear box tooth meshing adjustment system |
| CN111468884A (en) * | 2020-04-01 | 2020-07-31 | 陕西柴油机重工有限公司 | Herringbone gear assembly positioning method, herringbone gear assembly positioning device, herringbone gear assembly method and high-power diesel engine |
| CN111300010B (en) * | 2020-04-16 | 2021-03-12 | 泰安泰山福神齿轮箱有限责任公司 | Accurate tooth aligning device for press mounting of intermediate gear of engine and tooth aligning press mounting method |
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